Regarding Apache server failure

RT Users
1

Dear All,

I’m trying to configure RT to communic http:ate with my LDAP, for which I
followed this link : RT::Authen::ExternalAuth - RT Authentication using External Sources - metacpan.org .
After making the required changes, when I restarted my apache server it is
failing with following error :

root@devrt:/rt/etc# /etc/init.d/apache2 start

  • Starting web server apache2
    Segmentation fault (core dumped)
    Action ‘start’ failed.
    The Apache error log may have more information.
    …fail!

There is no important messages in log files:

root@devrt:/rt/etc# cat /var/log/apache2/error.log
[Tue Oct 06 15:13:41 2015] [info] Init: Seeding PRNG with 648 bytes of
entropy
[Tue Oct 06 15:13:41 2015] [info] Loading certificate & private key of
SSL-aware server
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_pphrase.c(470): unencrypted
RSA private key - pass phrase not required
[Tue Oct 06 15:13:41 2015] [info] Init: Initializing (virtual) servers for
SSL
[Tue Oct 06 15:13:41 2015] [info] Configuring server for SSL protocol
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(367): Creating new SSL
context (protocols: TLSv1, TLSv1.1, TLSv1.2)
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(541): Configuring
client authentication
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(1218): CA certificate:
/C=SE/O=AddTrust AB/OU=AddTrust External TTP Network/CN=AddTrust External
CA Root
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(1218): CA certificate:
/C=US/O=Internet2/OU=InCommon/CN=InCommon Server CA
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(608): Configuring
permitted SSL ciphers [!aNULL:!eNULL:!EXP:HIGH:MEDIUM:!ADH:!MD5]
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(316): Configuring TLS
extension handling
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(739): Configuring RSA
server certificate
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(785): Configuring RSA
server private key
[Tue Oct 06 15:13:41 2015] [info] mod_ssl/2.2.22 compiled against Server:
Apache/2.2.22, Library: OpenSSL/1.0.1

I’ve found a thread which was about similar issue,
[rt-users] LDAP External Authentication Issue ,
but there is no replies to that.

Any help or pointers to this issue will be appreciated.

Thanks,
Bharath.

2

Dear All,

I’m trying to configure RT to communicate with my LDAP, for which I followed
this link : RT::Authen::ExternalAuth - RT Authentication using External Sources - metacpan.org . After making
the required changes, when I restarted my apache server it is failing with
following error :

root@devrt:/rt/etc# /etc/init.d/apache2 start

  • Starting web server apache2
    Segmentation fault (core dumped)
    Action ‘start’ failed.
    The Apache error log may have more information.
    …fail!

There is no important messages in log files:

root@devrt:/rt/etc# cat /var/log/apache2/error.log
[Tue Oct 06 15:13:41 2015] [info] Init: Seeding PRNG with 648 bytes of
entropy
[Tue Oct 06 15:13:41 2015] [info] Loading certificate & private key of
SSL-aware server
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_pphrase.c(470): unencrypted
RSA private key - pass phrase not required
[Tue Oct 06 15:13:41 2015] [info] Init: Initializing (virtual) servers for
SSL
[Tue Oct 06 15:13:41 2015] [info] Configuring server for SSL protocol
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(367): Creating new SSL
context (protocols: TLSv1, TLSv1.1, TLSv1.2)
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(541): Configuring
client authentication
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(1218): CA certificate:
/C=SE/O=AddTrust AB/OU=AddTrust External TTP Network/CN=AddTrust External CA
Root
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(1218): CA certificate:
/C=US/O=Internet2/OU=InCommon/CN=InCommon Server CA
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(608): Configuring
permitted SSL ciphers [!aNULL:!eNULL:!EXP:HIGH:MEDIUM:!ADH:!MD5]
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(316): Configuring TLS
extension handling
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(739): Configuring RSA
server certificate
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(785): Configuring RSA
server private key
[Tue Oct 06 15:13:41 2015] [info] mod_ssl/2.2.22 compiled against Server:
Apache/2.2.22, Library: OpenSSL/1.0.1

What distro are you using?

To see the most recently written to log files, try:

cd /var/log
ls -lrt

and

cd /var/log/apache2
ls -lrt

-m

3

Hi Matt,

Thanks for replying back, here are the details :

Distro :
root@devrt:~# cat /etc/os-release
NAME=“Ubuntu”
VERSION=“12.04.3 LTS, Precise Pangolin”
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME=“Ubuntu precise (12.04.3 LTS)”
VERSION_ID=“12.04”

cd /var/log
ls -lrt (I’m showing only latest)
-rw-r----- 1 syslog adm 124 Oct 8 09:58 kern.log
-rw-r----- 1 root adm 529 Oct 8 09:58 apport.log
-rw-r----- 1 syslog adm 3086 Oct 8 10:00 syslog
-rw-r----- 1 syslog adm 113879 Oct 8 10:00 auth.log

root@devrt:/var/log# cat kern.log
Oct 8 09:58:10 devrt kernel: [3001033.121438] /usr/sbin/apach[5529]:
segfault at b54d9f80 ip b54d9f80 sp bfc702dc error 14

root@devrt:/var/log# cat apport.log
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: called for pid 5529,
signal 11
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: executable:
/usr/lib/apache2/mpm-prefork/apache2 (command line “/usr/sbin/apache2 -k
start”)
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: is_closing_session(): no
DBUS_SESSION_BUS_ADDRESS in environment
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: apport: report
/var/crash/_usr_lib_apache2_mpm-prefork_apache2.0.crash already exists and
unseen, doing nothing to avoid disk usage DoS

root@devrt:/var/log# cat syslog
Oct 8 09:58:10 devrt kernel: [3001033.121438] /usr/sbin/apach[5529]:
segfault at b54d9f80 ip b54d9f80 sp bfc702dc error 14
Oct 8 10:00:01 devrt CRON[5582]: (smmsp) CMD (test -x /etc/init.d/sendmail
&& /usr/share/sendmail/sendmail cron-msp)

cd /var/log/apache2
ls -lrt

last updated file under this directory is on oct 6th
rw-r–r-- 1 root root 0 Oct 6 15:33 error.log

Is there any way I can enable more debug messages through apache ?

Thanks,
Bharath.On Tue, Oct 6, 2015 at 4:16 PM, Matt Zagrabelny mzagrabe@d.umn.edu wrote:

On Tue, Oct 6, 2015 at 3:09 PM, bharath reddy vangoor.bharath@gmail.com wrote:

Dear All,

I’m trying to configure RT to communicate with my LDAP, for which I
followed
this link : RT::Authen::ExternalAuth - RT Authentication using External Sources - metacpan.org . After
making
the required changes, when I restarted my apache server it is failing
with
following error :

root@devrt:/rt/etc# /etc/init.d/apache2 start

  • Starting web server apache2
    Segmentation fault (core dumped)
    Action ‘start’ failed.
    The Apache error log may have more information.
    …fail!

There is no important messages in log files:

root@devrt:/rt/etc# cat /var/log/apache2/error.log
[Tue Oct 06 15:13:41 2015] [info] Init: Seeding PRNG with 648 bytes of
entropy
[Tue Oct 06 15:13:41 2015] [info] Loading certificate & private key of
SSL-aware server
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_pphrase.c(470): unencrypted
RSA private key - pass phrase not required
[Tue Oct 06 15:13:41 2015] [info] Init: Initializing (virtual) servers
for
SSL
[Tue Oct 06 15:13:41 2015] [info] Configuring server for SSL protocol
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(367): Creating new
SSL
context (protocols: TLSv1, TLSv1.1, TLSv1.2)
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(541): Configuring
client authentication
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(1218): CA
certificate:
/C=SE/O=AddTrust AB/OU=AddTrust External TTP Network/CN=AddTrust
External CA
Root
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(1218): CA
certificate:
/C=US/O=Internet2/OU=InCommon/CN=InCommon Server CA
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(608): Configuring
permitted SSL ciphers [!aNULL:!eNULL:!EXP:HIGH:MEDIUM:!ADH:!MD5]
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(316): Configuring
TLS
extension handling
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(739): Configuring
RSA
server certificate
[Tue Oct 06 15:13:41 2015] [debug] ssl_engine_init.c(785): Configuring
RSA
server private key
[Tue Oct 06 15:13:41 2015] [info] mod_ssl/2.2.22 compiled against Server:
Apache/2.2.22, Library: OpenSSL/1.0.1

What distro are you using?

To see the most recently written to log files, try:

cd /var/log
ls -lrt

and

cd /var/log/apache2
ls -lrt

-m

4

Hi Matt,

Thanks for replying back, here are the details :

Distro :
root@devrt:~# cat /etc/os-release
NAME=“Ubuntu”
VERSION=“12.04.3 LTS, Precise Pangolin”
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME=“Ubuntu precise (12.04.3 LTS)”
VERSION_ID=“12.04”

cd /var/log
ls -lrt (I’m showing only latest)
-rw-r----- 1 syslog adm 124 Oct 8 09:58 kern.log
-rw-r----- 1 root adm 529 Oct 8 09:58 apport.log
-rw-r----- 1 syslog adm 3086 Oct 8 10:00 syslog
-rw-r----- 1 syslog adm 113879 Oct 8 10:00 auth.log

root@devrt:/var/log# cat kern.log
Oct 8 09:58:10 devrt kernel: [3001033.121438] /usr/sbin/apach[5529]:
segfault at b54d9f80 ip b54d9f80 sp bfc702dc error 14

root@devrt:/var/log# cat apport.log
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: called for pid 5529,
signal 11
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: executable:
/usr/lib/apache2/mpm-prefork/apache2 (command line “/usr/sbin/apache2 -k
start”)
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: is_closing_session(): no
DBUS_SESSION_BUS_ADDRESS in environment
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: apport: report
/var/crash/_usr_lib_apache2_mpm-prefork_apache2.0.crash already exists and
unseen, doing nothing to avoid disk usage DoS

root@devrt:/var/log# cat syslog
Oct 8 09:58:10 devrt kernel: [3001033.121438] /usr/sbin/apach[5529]:
segfault at b54d9f80 ip b54d9f80 sp bfc702dc error 14
Oct 8 10:00:01 devrt CRON[5582]: (smmsp) CMD (test -x /etc/init.d/sendmail
&& /usr/share/sendmail/sendmail cron-msp)

Apache is segfaulting. Perhaps you have some bad RAM or other hardware issues.

You could try to set up another system with the same configs as this one.

cd /var/log/apache2
ls -lrt

last updated file under this directory is on oct 6th
rw-r–r-- 1 root root 0 Oct 6 15:33 error.log

Is there any way I can enable more debug messages through apache ?

Not sure. Try google. :slight_smile:

-m

5

Matt,

I don’t think it is a problem with RAM or any hardware, because when I
revert my changes in RT_SiteConfig.pm (with out LDAPAuthentication) apache
starts with out any error.

Thanks,
Bharath.On Thu, Oct 8, 2015 at 10:54 AM, Matt Zagrabelny mzagrabe@d.umn.edu wrote:

On Thu, Oct 8, 2015 at 9:21 AM, bharath reddy vangoor.bharath@gmail.com wrote:

Hi Matt,

Thanks for replying back, here are the details :

Distro :
root@devrt:~# cat /etc/os-release
NAME=“Ubuntu”
VERSION=“12.04.3 LTS, Precise Pangolin”
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME=“Ubuntu precise (12.04.3 LTS)”
VERSION_ID=“12.04”

cd /var/log
ls -lrt (I’m showing only latest)
-rw-r----- 1 syslog adm 124 Oct 8 09:58 kern.log
-rw-r----- 1 root adm 529 Oct 8 09:58 apport.log
-rw-r----- 1 syslog adm 3086 Oct 8 10:00 syslog
-rw-r----- 1 syslog adm 113879 Oct 8 10:00 auth.log

root@devrt:/var/log# cat kern.log
Oct 8 09:58:10 devrt kernel: [3001033.121438] /usr/sbin/apach[5529]:
segfault at b54d9f80 ip b54d9f80 sp bfc702dc error 14

root@devrt:/var/log# cat apport.log
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: called for pid 5529,
signal 11
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: executable:
/usr/lib/apache2/mpm-prefork/apache2 (command line “/usr/sbin/apache2 -k
start”)
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: is_closing_session():
no
DBUS_SESSION_BUS_ADDRESS in environment
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: apport: report
/var/crash/_usr_lib_apache2_mpm-prefork_apache2.0.crash already exists
and
unseen, doing nothing to avoid disk usage DoS

root@devrt:/var/log# cat syslog
Oct 8 09:58:10 devrt kernel: [3001033.121438] /usr/sbin/apach[5529]:
segfault at b54d9f80 ip b54d9f80 sp bfc702dc error 14
Oct 8 10:00:01 devrt CRON[5582]: (smmsp) CMD (test -x
/etc/init.d/sendmail
&& /usr/share/sendmail/sendmail cron-msp)

Apache is segfaulting. Perhaps you have some bad RAM or other hardware
issues.

You could try to set up another system with the same configs as this one.

cd /var/log/apache2
ls -lrt

last updated file under this directory is on oct 6th
rw-r–r-- 1 root root 0 Oct 6 15:33 error.log

Is there any way I can enable more debug messages through apache ?

Not sure. Try google. :slight_smile:

-m

6

Hi Bharath,

Were you able to get a solution to this? I just upgraded to Ubuntu 14.04
(from 11.04) and am experienced this same issue. Your post actually helped
me localize it to the external auth plugin.

I found that I was running and older version (0.20) of the plugin. When I
upgraded to version 0.25, the issue went away.

Thanks, and hope that helps you.

-MattOn Thu, Oct 8, 2015 at 11:48 AM, bharath reddy vangoor.bharath@gmail.com wrote:

Matt,

I don’t think it is a problem with RAM or any hardware, because when I
revert my changes in RT_SiteConfig.pm (with out LDAPAuthentication) apache
starts with out any error.

Thanks,
Bharath.

On Thu, Oct 8, 2015 at 10:54 AM, Matt Zagrabelny mzagrabe@d.umn.edu wrote:

On Thu, Oct 8, 2015 at 9:21 AM, bharath reddy vangoor.bharath@gmail.com wrote:

Hi Matt,

Thanks for replying back, here are the details :

Distro :
root@devrt:~# cat /etc/os-release
NAME=“Ubuntu”
VERSION=“12.04.3 LTS, Precise Pangolin”
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME=“Ubuntu precise (12.04.3 LTS)”
VERSION_ID=“12.04”

cd /var/log
ls -lrt (I’m showing only latest)
-rw-r----- 1 syslog adm 124 Oct 8 09:58 kern.log
-rw-r----- 1 root adm 529 Oct 8 09:58 apport.log
-rw-r----- 1 syslog adm 3086 Oct 8 10:00 syslog
-rw-r----- 1 syslog adm 113879 Oct 8 10:00 auth.log

root@devrt:/var/log# cat kern.log
Oct 8 09:58:10 devrt kernel: [3001033.121438] /usr/sbin/apach[5529]:
segfault at b54d9f80 ip b54d9f80 sp bfc702dc error 14

root@devrt:/var/log# cat apport.log
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: called for pid 5529,
signal 11
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: executable:
/usr/lib/apache2/mpm-prefork/apache2 (command line “/usr/sbin/apache2 -k
start”)
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015:
is_closing_session(): no
DBUS_SESSION_BUS_ADDRESS in environment
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: apport: report
/var/crash/_usr_lib_apache2_mpm-prefork_apache2.0.crash already exists
and
unseen, doing nothing to avoid disk usage DoS

root@devrt:/var/log# cat syslog
Oct 8 09:58:10 devrt kernel: [3001033.121438] /usr/sbin/apach[5529]:
segfault at b54d9f80 ip b54d9f80 sp bfc702dc error 14
Oct 8 10:00:01 devrt CRON[5582]: (smmsp) CMD (test -x
/etc/init.d/sendmail
&& /usr/share/sendmail/sendmail cron-msp)

Apache is segfaulting. Perhaps you have some bad RAM or other hardware
issues.

You could try to set up another system with the same configs as this one.

cd /var/log/apache2
ls -lrt

last updated file under this directory is on oct 6th
rw-r–r-- 1 root root 0 Oct 6 15:33 error.log

Is there any way I can enable more debug messages through apache ?

Not sure. Try google. :slight_smile:

-m

7

Hi Matt,

Thanks for posting this, Yes I was able to get the solution. The issue in
my case was I missed one of the key plugin and Apache didn’t show me that
missing plugin in logs, later when I set the RT log then i was able to
found it.

Thanks,
Bharath.On Fri, Nov 13, 2015 at 3:38 PM, Matt Brennan brennanma@gmail.com wrote:

Hi Bharath,

Were you able to get a solution to this? I just upgraded to Ubuntu 14.04
(from 11.04) and am experienced this same issue. Your post actually helped
me localize it to the external auth plugin.

I found that I was running and older version (0.20) of the plugin. When
I upgraded to version 0.25, the issue went away.

Thanks, and hope that helps you.

-Matt

On Thu, Oct 8, 2015 at 11:48 AM, bharath reddy vangoor.bharath@gmail.com wrote:

Matt,

I don’t think it is a problem with RAM or any hardware, because when I
revert my changes in RT_SiteConfig.pm (with out LDAPAuthentication) apache
starts with out any error.

Thanks,
Bharath.

On Thu, Oct 8, 2015 at 10:54 AM, Matt Zagrabelny mzagrabe@d.umn.edu wrote:

On Thu, Oct 8, 2015 at 9:21 AM, bharath reddy vangoor.bharath@gmail.com wrote:

Hi Matt,

Thanks for replying back, here are the details :

Distro :
root@devrt:~# cat /etc/os-release
NAME=“Ubuntu”
VERSION=“12.04.3 LTS, Precise Pangolin”
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME=“Ubuntu precise (12.04.3 LTS)”
VERSION_ID=“12.04”

cd /var/log
ls -lrt (I’m showing only latest)
-rw-r----- 1 syslog adm 124 Oct 8 09:58 kern.log
-rw-r----- 1 root adm 529 Oct 8 09:58 apport.log
-rw-r----- 1 syslog adm 3086 Oct 8 10:00 syslog
-rw-r----- 1 syslog adm 113879 Oct 8 10:00 auth.log

root@devrt:/var/log# cat kern.log
Oct 8 09:58:10 devrt kernel: [3001033.121438] /usr/sbin/apach[5529]:
segfault at b54d9f80 ip b54d9f80 sp bfc702dc error 14

root@devrt:/var/log# cat apport.log
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: called for pid 5529,
signal 11
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: executable:
/usr/lib/apache2/mpm-prefork/apache2 (command line “/usr/sbin/apache2
-k
start”)
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015:
is_closing_session(): no
DBUS_SESSION_BUS_ADDRESS in environment
ERROR: apport (pid 5532) Thu Oct 8 09:58:11 2015: apport: report
/var/crash/_usr_lib_apache2_mpm-prefork_apache2.0.crash already exists
and
unseen, doing nothing to avoid disk usage DoS

root@devrt:/var/log# cat syslog
Oct 8 09:58:10 devrt kernel: [3001033.121438] /usr/sbin/apach[5529]:
segfault at b54d9f80 ip b54d9f80 sp bfc702dc error 14
Oct 8 10:00:01 devrt CRON[5582]: (smmsp) CMD (test -x
/etc/init.d/sendmail
&& /usr/share/sendmail/sendmail cron-msp)

Apache is segfaulting. Perhaps you have some bad RAM or other hardware
issues.

You could try to set up another system with the same configs as this one.

cd /var/log/apache2
ls -lrt

last updated file under this directory is on oct 6th
rw-r–r-- 1 root root 0 Oct 6 15:33 error.log

Is there any way I can enable more debug messages through apache ?

Not sure. Try google. :slight_smile:

-m